Ilford 400 Delta Professional is a fast, fine-grain, black-and-white film, ideal for pictorial and fine art photography. 400 Delta Professional 35mm film is coated on 0.125mm/5-mil acetate base and is available in 24 or 36 exposure cassettes, or in bulk lengths of 30.5 metres (100ft). 400 Delta Professional 35mm film is supplied in DX coded cassettes, suitable for all 35mm cameras.